In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles ...

In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls
  flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P)
  is dominant to the allele for white (p). A tall plant with purple flowers crossed with a dwarf plant with
  white flowers produces 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white. What is
  the genotype of the parents? What will be an ideal response?
 
 

Question 2

In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls
  flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P)
  is dominant to the allele for white (p). A tall plant with white flowers crossed with a dwarf plant with
  purple flowers produces all tall offspring with purple flowers. What is the genotype of the parents? What will be an ideal response?